RESUMO
Natural killer (NK) cells comprise one subset of the innate lymphoid cell (ILC) family. Despite reported antitumor functions of NK cells, their tangible contribution to tumor control in humans remains controversial. This is due to incomplete understanding of the NK cell states within the tumor microenvironment (TME). Here, we demonstrate that peripheral circulating NK cells differentiate down two divergent pathways within the TME, resulting in different end states. One resembles intraepithelial ILC1s (ieILC1) and possesses potent in vivo antitumor activity. The other expresses genes associated with immune hyporesponsiveness and has poor antitumor functional capacity. Interleukin-15 (IL-15) and direct contact between the tumor cells and NK cells are required for the differentiation into CD49a+CD103+ cells, resembling ieILC1s. These data explain the similarity between ieILC1s and tissue-resident NK cells, provide insight into the origin of ieILC1s, and identify the ieILC1-like cell state within the TME to be the NK cell phenotype with the greatest antitumor activity. Because the proportions of the different ILC states vary between tumors, these findings provide a resource for the clinical study of innate immune responses against tumors and the design of novel therapy.
Assuntos
Neoplasias de Cabeça e Pescoço/imunologia , Imunidade Inata/imunologia , Células Matadoras Naturais/imunologia , Linfócitos/imunologia , Microambiente Tumoral/imunologia , Idoso , Idoso de 80 Anos ou mais , Antígenos CD/metabolismo , Antineoplásicos/metabolismo , Diferenciação Celular/imunologia , Linhagem Celular Tumoral , Feminino , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Interleucina-15/metabolismo , Ativação Linfocitária/imunologia , Masculino , Pessoa de Meia-Idade , Membro 1 do Grupo A da Subfamília 4 de Receptores Nucleares , Fenótipo , Carcinoma de Células Escamosas de Cabeça e Pescoço/imunologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologiaRESUMO
Xerostomia (dry mouth) is the most common side effect of radiation therapy in patients with head and neck cancer and causes difficulty speaking and swallowing. Since aldehyde dehydrogenase 3A1 (ALDH3A1) is highly expressed in mouse salivary stem/progenitor cells (SSPCs), we sought to determine the role of ALDH3A1 in SSPCs using genetic loss-of-function and pharmacologic gain-of-function studies. Using DarkZone dye to measure intracellular aldehydes, we observed higher aldehyde accumulation in irradiated Aldh3a1-/- adult murine salisphere cells and in situ in whole murine embryonic salivary glands enriched in SSPCs compared with wild-type glands. To identify a safe ALDH3A1 activator for potential clinical testing, we screened a traditional Chinese medicine library and isolated d-limonene, commonly used as a food-flavoring agent, as a single constituent activator. ALDH3A1 activation by d-limonene significantly reduced aldehyde accumulation in SSPCs and whole embryonic glands, increased sphere-forming ability, decreased apoptosis, and improved submandibular gland structure and function in vivo after radiation. A phase 0 study in patients with salivary gland tumors showed effective delivery of d-limonene into human salivary glands following daily oral dosing. Given its safety and bioavailability, d-limonene may be a good clinical candidate for mitigating xerostomia in patients with head and neck cancer receiving radiation therapy.
Assuntos
Aldeído Desidrogenase/metabolismo , Aldeídos/metabolismo , Cicloexenos/farmacologia , Radioterapia/efeitos adversos , Glândulas Salivares/metabolismo , Terpenos/farmacologia , Xerostomia/metabolismo , Animais , Apoptose/efeitos dos fármacos , Feminino , Neoplasias de Cabeça e Pescoço/metabolismo , Neoplasias de Cabeça e Pescoço/radioterapia , Limoneno , Medicina Tradicional Chinesa/métodos , Camundongos , Camundongos Endogâmicos C57BL , Substâncias Protetoras/farmacologia , Glândulas Salivares/efeitos dos fármacos , Glândulas Salivares/efeitos da radiação , Células-Tronco/efeitos dos fármacos , Células-Tronco/metabolismo , Glândula Submandibular/efeitos dos fármacos , Glândula Submandibular/metabolismo , Xerostomia/tratamento farmacológicoRESUMO
BACKGROUND: Videolaryngoscopy is commonly used by anesthesiologists to manage difficult airways. Recently otolaryngologists have reported use in select procedures; to date there is limited evaluation in head and neck surgery. MATERIALS AND METHODS: Patients who underwent direct laryngoscopy (DL) with use of GlideScope videolaryngoscopy (GVL) were retrospectively identified from a tertiary care Veterans Affairs hospital. GVL was used to assist or replace traditional laryngoscopes for diagnostic and therapeutic procedures. RESULTS: Nineteen patients (48-83â¯years old) underwent 21 procedures. Difficult endotracheal intubation was reported in 53% of patients. GVL replaced traditional DL in 76% of cases, assisted evaluation prior to traditional DL in 10%, and rescued failed traditional DL in 14%. No complications occurred. Three indications for GVL were identified. DISCUSSION: GVL was safe in our experience and provides unique benefits in selected scenarios in head and neck surgery. Otolaryngologists can consider videolaryngoscopy as a complement to traditional DL.
Assuntos
Manuseio das Vias Aéreas/métodos , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/cirurgia , Laringoscopia/métodos , Neoplasias Orofaríngeas/diagnóstico , Neoplasias Orofaríngeas/cirurgia , Cirurgia Vídeoassistida/métodos , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Intubação Intratraqueal/métodos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Segurança , Resultado do TratamentoRESUMO
OBJECTIVE: To report the patient selection, surgical technique, and outcomes of parotidectomy using local anesthesia under monitored anesthesia care (MAC). METHODS: A retrospective chart review was performed for patients undergoing parotidectomy under local anesthesia at an academic head and neck surgery center. RESULTS: Six patients deemed high risk for general anesthesia (GA) due to medical comorbidities or with a strong preference to avoid GA underwent parotidectomy using local anesthesia and MAC. Parotidectomy was performed for several indications, including benign tumors, malignant tumors, and chronic sialadenitis. Mean age of patients was 78.0⯱â¯7.9â¯years, and all had an American Society of Anesthesia scoreâ¯≥â¯2 and Charlson comorbidity index ≥4. Mean operative time was 102.8⯱â¯38.3â¯min, comparable to that of parotidectomy under general anesthesia. No major complications occurred. Minor complications included three cases of temporary postoperative facial nerve weakness limited to 1-2 lower division branches. At most recent follow up (10 to 48â¯months), all patients were medically stable and disease free. CONCLUSION: In carefully selected patients, parotidectomy under local anesthesia is a viable treatment alternative that can be offered to patients. Successful outcomes require preoperative counseling, meticulous technique, and close collaboration with anesthesia colleagues.
Assuntos
Anestesia Local , Procedimentos Cirúrgicos Otorrinolaringológicos/métodos , Glândula Parótida/cirurgia , Idoso , Idoso de 80 Anos ou mais , Humanos , Monitorização Intraoperatória , Duração da Cirurgia , Neoplasias Parotídeas/cirurgia , Seleção de Pacientes , Estudos Retrospectivos , Sialadenite/cirurgia , Resultado do TratamentoRESUMO
PURPOSE: The most common surgical method to remove benign parotid tumors remains the prograde approach. We examined if a retrograde surgical technique offers better outcomes than historical prograde controls. MATERIALS AND METHODS: A retrospective chart review at Stanford Hospital was conducted to identify retrograde parotidectomies between February 2012 and October 2014 that were staffed by the senior author (DS) with resident involvement. Facial nerve (FN) outcomes and other post-surgical parameters were recorded. RESULTS: We identified 44 consecutive cases and found that 18.2% (n=8) of patients experienced temporary paresis and 2.3% (n=1) experienced minor (HB 2) permanent paresis limited to one branch. The average hospital length of stay was 0.64 days and complication rate was 6.8%. CONCLUSION: The retrograde technique has complication rates comparable to historical rates for the prograde technique and is amenable to minimally invasive outpatient superficial parotidectomy.
Assuntos
Adenoma/cirurgia , Carcinoma/cirurgia , Traumatismos do Nervo Facial/epidemiologia , Paralisia Facial/epidemiologia , Neoplasias Parotídeas/cirurgia , Complicações Pós-Operatórias/epidemiologia , Adenoma/patologia , Carcinoma/patologia , Dissecação/efeitos adversos , Feminino , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Neoplasias Parotídeas/patologia , Estudos RetrospectivosRESUMO
Ameloblastoma is a rare odontogenic neoplasm of the mandible and maxilla, with multiple histologic variants, and high recurrence rates if improperly treated. The current mainstay of treatment is wide local excision with appropriate margins and immediate reconstruction. Here we review the ameloblastoma literature, using the available evidence to highlight the change in management over the past several decades. In addition, we explore the recent molecular characterization of these tumors which may point towards new potential avenues of personalized treatment.
Assuntos
Ameloblastoma , Neoplasias Maxilomandibulares , Procedimentos Cirúrgicos Bucais/métodos , Procedimentos de Cirurgia Plástica/métodos , Ameloblastoma/patologia , Ameloblastoma/fisiopatologia , Ameloblastoma/cirurgia , Gerenciamento Clínico , Humanos , Neoplasias Maxilomandibulares/patologia , Neoplasias Maxilomandibulares/fisiopatologia , Neoplasias Maxilomandibulares/cirurgia , Mandíbula/diagnóstico por imagem , Mandíbula/patologia , Neoplasias Mandibulares/patologia , Maxila/diagnóstico por imagem , Maxila/patologia , PrognósticoRESUMO
OBJECTIVE: Chronic sialadenitis is associated with decreased quality of life and recurrent infections. While sialendoscopy with stenting is effective in relieving symptoms of sialadenitis, currently available stents are rigid and poorly tolerated by patients, leading to early removal and potential for adverse scarring. This study examines whether sutures can be used as a stenting material to improve patient comfort and reduce recurrence risk. METHODS: This is a retrospective cohort study of a consecutive series of adult patients with chronic sialadenitis undergoing sialendoscopy with or without suture stenting. Data were collected between 2014 and 2018 with a 3-year follow-up period ending in 2021. The primary outcome measure was recurrence of sialadenitis within 3 years of surgery. Secondary outcomes were stent dislodgement and patient-reported discomfort. RESULTS: We included 63 patients with parotid sialadenitis of whom 28 underwent suture stenting and 35 did not receive stenting after sialendoscopy. Stents were well tolerated, with a mean duration of 34.5 days, and only 2 of 28 stents (7.1%) accidentally dislodged within the first week. Suture stenting significantly reduced symptom recurrence after sialendoscopy (OR = 0.09, 95% CI 0.02-0.45, p = 0.003; 3-year sialadenitis recurrence rate: 7.1% vs. 45.7%, p = 0.005). Cox multivariate regression for clinicodemographic variables showed an HR of 0.04 (95% CI 0.01-0.19, p < 0.001) for the risk of symptom recurrence. CONCLUSIONS AND RELEVANCE: Suture stenting after sialendoscopy is low cost, available across all institutions, well-tolerated by patients, and highly efficacious in reducing risk of recurrent sialadenitis after sialendoscopy. LEVEL OF EVIDENCE: 3 Laryngoscope, 134:614-621, 2024.
Assuntos
Parotidite , Sialadenite , Adulto , Humanos , Qualidade de Vida , Estudos Retrospectivos , Endoscopia/efeitos adversos , Endoscopia/métodos , Resultado do Tratamento , Sialadenite/cirurgia , Sialadenite/diagnóstico , Doença Crônica , SuturasRESUMO
Background: Three-dimensional (3D) printing has emerged as a promising new technology for the development of surgical prosthetics. Research in orthopedic surgery has demonstrated that using 3D printed customized prosthetics results in more precise implant placements and better patient outcomes. However, there has been little research on implementing customized 3D printed prosthetics in otolaryngology. The program sought to determine whether computed tomography (CT) serves as feasible templates to construct 3D printed palatal obturator prosthetics for defects in patients who have been treated for head and neck cancers. Observations: A retrospective review of patients with palatal defects was conducted and identified 1 patient with high quality CTs compatible with 3D modeling. CTs of the patient's craniofacial anatomy were used to develop a 3D model and a Formlabs 3B+ printer printed the palatal prosthetic. We successfully developed and produced an individualized prosthetic using CTs from a veteran with head and neck deformities caused by cancer treatment who was previously treated at the Veterans Affairs Palo Alto Health Care System. This project was successful in printing patient-specific implants using CT reproductions of the patient's craniofacial anatomy, particularly of the palate. The program was a proof of concept and the implant we created was not used on the patient. Conclusions: Customized 3D printed implants may allow otolaryngologists to enhance the performance and efficiency of surgeries and better rehabilitate and reconstruct craniofacial deformities to restore appearance and function to patients. Additional research will strive to enhance the therapeutic potential of these prosthetics to serve as low-cost, patient-specific implants.
RESUMO
BACKGROUND: In head and neck cancer (HNC), 3-month post-treatment positron emission tomography (PET)/computed tomography (CT) reliably identifies persistent/recurrent disease. However, further PET/CT surveillance has unclear benefit. The impact of post-treatment PET/CT surveillance on outcomes is assessed at 12 and 24 months. METHODS: A 10-year retrospective analysis of HNC patients was carried out with long-term serial imaging. Imaging at 3 months included either PET/CT or magnetic resonance imaging, with all subsequent imaging comprised of PET/CT. PET/CT scans at 12 and 24 months were evaluated only if preceding interval scans were negative. Of 1114 identified patients, 284 had 3-month scans, 175 had 3- and 12-month scans, and 77 had 3-, 12-, and 24-month scans. RESULTS: PET/CT detection rates in clinically occult patients were 9% (15 of 175) at 12 months, and 4% (3 of 77) at 24 months. No difference in outcomes was identified between PET/CT-detected and clinically detected recurrences, with similar 3-year disease-free survival (41% vs 46%, P = .91) and 3-year overall survival (60% vs 54%, P = .70) rates. Compared with 3-month PET/CT, 12-month PET/CT demonstrated fewer equivocal reads (26% vs 10%, P < .001). Of scans deemed equivocal, 6% (5 of 89) were ultimately found to be positive. CONCLUSIONS: HNC patients with negative 3-month imaging appear to derive limited benefit from subsequent PET/CT surveillance. No survival differences were observed between PET/CT-detected and clinically detected recurrences, although larger prospective studies are needed for further investigation.
Assuntos
Imagem Multimodal , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/diagnóstico , Feminino , Neoplasias de Cabeça e Pescoço/diagnóstico , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Recidiva , Estudos Retrospectivos , Carcinoma de Células Escamosas de Cabeça e Pescoço , Fatores de Tempo , Adulto JovemRESUMO
Adult salivary stem/progenitor cells (SSPC) have an intrinsic property to self-renew in order to maintain tissue architecture and homeostasis. Adult salivary glands have been documented to harbor SSPC, which have been shown to play a vital role in the regeneration of the glandular structures postradiation damage. We have previously demonstrated that activation of aldehyde dehydrogenase 3A1 (ALDH3A1) after radiation reduced aldehyde accumulation in SSPC, leading to less apoptosis and improved salivary function. We subsequently found that sustained pharmacological ALDH3A1 activation is critical to enhance regeneration of murine submandibular gland after radiation damage. Further investigation shows that ALDH3A1 function is crucial for SSPC self-renewal and survival even in the absence of radiation stress. Salivary glands from Aldh3a1 -/- mice have fewer acinar structures than wildtype mice. ALDH3A1 deletion or pharmacological inhibition in SSPC leads to a decrease in mitochondrial DNA copy number, lower expression of mitochondrial specific genes and proteins, structural abnormalities, lower membrane potential, and reduced cellular respiration. Loss or inhibition of ALDH3A1 also elevates ROS levels, depletes glutathione pool, and accumulates ALDH3A1 substrate 4-hydroxynonenal (4-HNE, a lipid peroxidation product), leading to decreased survival of murine SSPC that can be rescued by treatment with 4-HNE specific carbonyl scavengers. Our data indicate that ALDH3A1 activity protects mitochondrial function and is important for the regeneration activity of SSPC. This knowledge will help to guide our translational strategy of applying ALDH3A1 activators in the clinic to prevent radiation-related hyposalivation in head and neck cancer patients.
RESUMO
The meteoric rise of telemedicine early in the COVID-19 pandemic might easily be mistaken for an ephemeral trend-one reaching its zenith in a moment of crisis. To the contrary, momentum has been mounting for telehealth over decades. The recent increase in telecare reveals its potential to deliver efficient, patient-centered, high-quality care in an increasingly technology-dependent landscape. Prior to COVID-19, surgeons lagged behind medical counterparts in embracing telemedicine; however, the pragmatic imperatives for remote care of patients and changes to Medicare removed key barriers to adoption. Otolaryngology-head and neck surgery has innovated across subspecialties, leading in COVID-19 scholarship and year-over-year publications on telemedicine. Yet, improved access to subspecialists is tempered by a digital divide that threatens to exacerbate disparities. Otolaryngology is poised to lead the transformation of procedural specialties while ensuring equitable care.
Assuntos
COVID-19 , Atenção à Saúde/métodos , Otolaringologia/métodos , Telemedicina/tendências , Adolescente , Adulto , Idoso , Previsões , Humanos , Pessoa de Meia-Idade , Adulto JovemRESUMO
OBJECTIVE: The coronavirus disease 2019 (COVID-19) pandemic has led to a global surge in critically ill patients requiring invasive mechanical ventilation, some of whom may benefit from tracheostomy. Decisions on if, when, and how to perform tracheostomy in patients with COVID-19 have major implications for patients, clinicians, and hospitals. We investigated the tracheostomy protocols and practices that institutions around the world have put into place in response to the COVID-19 pandemic. DATA SOURCES: Protocols for tracheostomy in patients with severe acute respiratory syndrome coronavirus 2 infection from individual institutions (n = 59) were obtained from the United States and 25 other countries, including data from several low- and middle-income countries, 23 published or society-endorsed protocols, and 36 institutional protocols. REVIEW METHODS: The comparative document analysis involved cross-sectional review of institutional protocols and practices. Data sources were analyzed for timing of tracheostomy, contraindications, preoperative testing, personal protective equipment (PPE), surgical technique, and postoperative management. CONCLUSIONS: Timing of tracheostomy varied from 3 to >21 days, with over 90% of protocols recommending 14 days of intubation prior to tracheostomy. Most protocols advocate delaying tracheostomy until COVID-19 testing was negative. All protocols involved use of N95 or higher PPE. Both open and percutaneous techniques were reported. Timing of tracheostomy changes ranged from 5 to >30 days postoperatively, sometimes contingent on negative COVID-19 test results. IMPLICATIONS FOR PRACTICE: Wide variation exists in tracheostomy protocols, reflecting geographical variation, different resource constraints, and limited data to drive evidence-based care standards. Findings presented herein may provide reference points and a framework for evolving care standards.
Assuntos
COVID-19/prevenção & controle , Controle de Infecções , Internacionalidade , Assistência Perioperatória , Traqueostomia , COVID-19/epidemiologia , COVID-19/transmissão , Protocolos Clínicos , Humanos , Padrões de Prática MédicaRESUMO
OBJECTIVES: To evaluate the risks of neoplasm and malignancy in surgically treated cystic parotid masses compared with solid or mixed lesions and to evaluate the performance of fine-needle aspiration (FNA) in parotid cysts. STUDY DESIGN: Retrospective cross-sectional study. SETTING: Single-institution academic tertiary care center. SUBJECTS AND METHODS: Patients without a history of human immunodeficiency virus or head and neck cancer who underwent parotidectomy for parotid masses and had preoperative imaging to characterize lesions as cystic, solid, or mixed (ie, partially cystic and partially solid). We assessed the risks of neoplasia and malignancy, adjusting for age, sex, race/ethnicity, facial nerve weakness, and history of malignancy. We also evaluated the sensitivity and specificity of FNA. RESULTS: We included 308 patients, 27 of whom had cystic parotid masses (5 simple and 22 complex). Cystic masses were less likely to be neoplastic compared to solid or mixed masses (44% vs 97%; odds ratio [OR], 0.03; 95% confidence interval [CI], 0.01-0.07); however, there was no difference in the risk of malignancy (22% vs 26%; OR, 0.81; 95% CI, 0.32-2.10). Cystic masses were more likely to yield nondiagnostic FNA cytology results, but for diagnostic samples, FNA was 86% sensitive and 33% specific for diagnosing neoplasia and 75% sensitive and 83% specific for diagnosing malignancy. CONCLUSION: In our population, cystic masses undergoing surgery were less likely to be neoplastic but had a similar risk of malignancy as solid masses. The risk of malignancy should be considered in the management of cystic parotid masses.
Assuntos
Transformação Celular Neoplásica/patologia , Cistos/patologia , Glândula Parótida/patologia , Neoplasias Parotídeas/patologia , Lesões Pré-Cancerosas/patologia , Centros Médicos Acadêmicos , Adulto , Idoso , Biópsia por Agulha Fina/métodos , Estudos Transversais , Diagnóstico Diferencial , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Pancreatopatias/patologia , Glândula Parótida/diagnóstico por imagem , Neoplasias Parotídeas/fisiopatologia , Estudos Retrospectivos , Medição de Risco , Centros de Atenção Terciária , Estados UnidosRESUMO
BACKGROUND: Xerostomia, the subjective sensation of dry mouth, contributes to dysarthria, dysphagia, and diminished quality of life. Polypharmacy is a known and modifiable risk factor for xerostomia. The objective of this study was to evaluate the prevalence of dry mouth, the relationship between dry mouth and other oral conditions, and the impact of polypharmacy on dry mouth. METHODS: This study was a retrospective cross-sectional study of all patients seen in fiscal year (FY) 2015 (October 1, 2014 to September 30, 2015) at the VA Palo Alto Health Care System (VAPAHCS), a tertiary care US Department of Veterans Affairs (VA) hospital. Patients diagnosed with xerostomia were identified using ICD-9 codes (527.7, 527.8, R68.2) and Systemized Nomenclature of Medicine Clinical Terms (SNOMED CT) codes (87715008, 78948009). RESULTS: Of all the patients seen at VAPAHCS during FY 2015, 138 had a diagnostic code for xerostomia; of those patients, 84 had at least 1 documented speech, dentition, or swallowing (SDS) problem, and 55 (39.9%) were taking ≥ 12 medications, more than twice as many patients as in any one of the other groups studied (0-2, 3-5, 6-8, and 9-11 medications taken). Although 4,971 total patients seen at VAPAHCS had documented SDS problems during FY 2015, of those patients only 77 (1.5%) had an additional recorded diagnosis of xerostomia. CONCLUSIONS: Heightened physician awareness regarding the signs and symptoms of and risk factors for xerostomia is needed to improve health care providers' ability to diagnose dry mouth. Polypharmacy also must be considered when developing new strategies for preventing and treating xerostomia.
RESUMO
BACKGROUND: Free abdominal fat transfer is commonly used to restore facial volume and improve cosmesis after parotidectomy for pleomorphic adenomas. We describe the radiographic characteristics of these grafts on follow-up imaging. METHODS: Medical records of four patients who underwent parotidectomy with abdominal fat graft in 2016 and had follow up imaging available were retrospectively analyzed. An otolaryngologist and neuroradiologist reviewed imaging studies, evaluated the fat grafts, and monitored for residual or recurrent disease. RESULTS: The abdominal fat was successfully grafted in all four patients. Post-operative baseline magnetic resonance imaging and additional surveillance imaging showed fat grafts with minimal volume loss. However, there was development of irregular enhancement consistent with fat necrosis in two of the four patients. CONCLUSIONS: Radiographic surveillance of free fat graft reconstruction after pleomorphic adenoma resection shows minimal contraction in size but development of fat necrosis. Recognition of expected changes should help avoid confusion with residual or recurrent disease, reassuring both patient and treating physician.
RESUMO
Saliva is a multifaceted bodily fluid that is often taken for granted but is indispensable for oral health and overall well-being in humans. Although mainly comprised of water (99.5%), proteins, ions and enzymes turn saliva into a viscoelastic solution that performs a variety of vital tasks. This review article gives a brief overview of the salivary gland system, as well as the composition, output and functions of saliva. It also addresses the current applications of saliva for diagnostic purposes, the clinical relevance of saliva in oral diseases as well as current treatment options.
Assuntos
Saliva/metabolismo , Glândulas Salivares/metabolismo , Líquidos Corporais/metabolismo , Humanos , Doenças da Boca/metabolismo , Saúde BucalRESUMO
OBJECTIVE: While surgical treatment concentrates in tertiary care centers, an increasing number of patients request postoperative radiation therapy (PORT) at a separate center closer to home. Our goal was to determine whether fragmentation of surgery and PORT were associated with poorer oncologic outcomes. METHODS: We conducted a retrospective cohort study of 32,813 head and neck cancer patients treated with surgery and PORT in the National Cancer Data Base. Our main outcome was overall survival (OS). Statistical analysis included χ2 , t tests, Kaplan-Meier, and Cox regression analysis. RESULTS: Fragmented care was independently associated with increased risk of mortality (hazard ratio [HR], 1.08; 95% confidence interval [CI], 1.03-1.13), whereas distance to surgical center > 30 miles (HR, 0.92; 95% CI, 0.87-0.97) was associated with improved OS. On subgroup analysis, fragmented care was associated with decreased OS only among patients who had surgery at an academic center (HR, 1.10; 95% CI, 1.04-1.17). Within academic centers, greater distance from the surgical center was associated with improved survival only in patients who received PORT at the same facility (HR, 0.85; 95% CI, 0.78-0.93), but this effect was negated among patients who had fragmented care (HR, 0.97; 95% CI, 0.85-1.11). CONCLUSION: When cancer care is fragmented, there is no longer a survival benefit for patients to travel for surgical care at academic medical centers. Fragmented care is independently associated with worse survival, and further research is needed to evaluate the causes of this difference in survival to determine if improving care coordination can mitigate this survival difference. LEVEL OF EVIDENCE: NA Laryngoscope, 129:1413-1419, 2019.
Assuntos
Centros Médicos Acadêmicos/estatística & dados numéricos , Continuidade da Assistência ao Paciente/estatística & dados numéricos , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/terapia , Radioterapia Adjuvante/mortalidade , Idoso , Distribuição de Qui-Quadrado , Bases de Dados Factuais , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Resultado do TratamentoRESUMO
OBJECTIVE: To analyze oropharyngeal squamous cell carcinoma incidence and mortality trends in the United States for the years 1973 through 2013. STUDY DESIGN: Cross-sectional study using a large population-based cancer database. METHODS: Data on incidence and mortality rates were extracted from the Surveillance, Epidemiology, and End Results (SEER) 9 Database. Annual percentage change in rates was calculated using Joinpoint regression analysis (National Cancer Institute, Bethesda, MD). RESULTS: Incidence rates increased (annual percent change [APC]; 1.52, 95% confidence interval [CI] 0.17 to 2.88) from 1973 to 1983, remained stable (APC -0.52, 95% CI -1.30 to 0.26) from 1983 to 1997, and increased (APC 1.32, 95% CI 0.83 to 1.81) from 1997 to 2013. Overall, incidence rates increased for males (APC 0.73, 95% CI 0.22 to 1.25) but not females (APC -0.77, 95% CI -0.68 to 0.82). Incidence rates increased in the white population (APC 0.79, 95% CI 0.33 to 1.25) but decreased in the black population (APC -0.72, 95% CI -1.41 to -0.02). The incidence rates increased for tongue-base tumors (APC 1.17, 95% CI 0.42 to 1.92) and tonsil tumors (APC 0.47, 95% CI 1.10 to 4.96) but decreased for other sites. Incidence-based mortality decreased (APC -0.78, 95% CI -1.13 to -0.42) from 1993 to 2013. CONCLUSION: Oropharyngeal squamous cell carcinoma incidence rates increased in a nonlinear fashion from 1973 to 2013, whereas mortality rates declined. This, along with variation in trends by demographic and tumor factors, suggest that human papilloma virus is the main driver of the recent rise in incidence. LEVEL OF EVIDENCE: 2b. Laryngoscope, 128:1582-1588, 2018.
Assuntos
Carcinoma de Células Escamosas/epidemiologia , Carcinoma de Células Escamosas/mortalidade , Neoplasias Orofaríngeas/epidemiologia , Neoplasias Orofaríngeas/mortalidade , Adulto , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Mortalidade/tendências , Programa de SEER , Estados Unidos/epidemiologiaRESUMO
Importance: Complex head and neck cancer defects that require multiflap reconstructions are technically feasible, but the morbidity and patient outcomes of such large-scale head and neck operations have yet to be systematically reviewed. Objective: To systematically review existing literature to characterize the outcomes of large-scale head and neck resections that require multiple-flap reconstructions (defined as defects that require >1 flap [free, pedicled, or combinations thereof]). Evidence Review: Two authors independently searched PubMed, Embase, and the Cochrane Review databases for English-only texts published on any date. Included studies examined patients who underwent complex head and neck surgical resections that required multiple simultaneous flaps for reconstruction. Included studies reported results on at least one of the following outcomes: functional and aesthetic, patient survival, or cost (estimated by operating room time, length of stay, and/or complications). Methodological Index for Non-Randomized Studies (MINORS) criteria for bias and modified Oxford Centre for Evidence-Based Medicine recommendations were used to assess study quality. Findings: Twenty-four studies published from November 1, 1992, through September 1, 2016, met the final inclusion criteria, with a total of 487 patients (370 male [79.4%]; mean [SD] weighted age, 55.1 [4.1] years). Sixty-two of 250 patients (24.8%) were partially or fully dependent on feeding tubes at follow-up. Twenty-two of 75 patients (29.3%) had poor postoperative oral competence, causing moderate to severe drooling. Nineteen of 108 patients (17.6%) had unintelligible speech. Nine of 64 patients (14.1%) were unsatisfied with their aesthetic outcome. The mean (SD) reported survival was 2.36 (1.39) years. The mean (SD) length of stay was 24.5 (12.2) days in 219 patients. Eighty-eight minor complications (eg, partial flap necrosis, donor site complications) and 185 major complications (eg, surgical reexplorations, flap loss, or cardiopulmonary complications) were reported in 380 patients. Mean (SD) MINORS scores were 16.0 (3.2) for comparison studies and 11.4 (1.8) for noncomparison studies. Conclusions and Relevance: Because of limited patient life expectancies, modest functional and aesthetic outcomes, and significant associated costs, surgeons should weigh the curative potential and palliative benefits for individual patients with a comprehensive view of the overall outcomes of extensive head and neck resections and reconstructions. Realistic expectations should be emphasized during preoperative discussions with patients.